The new Broadway production of the musical On a Clear Day You Can See Forever has been billed as a "reincarnation" rather than a revival. The premise is the same as before: A psychiatrist, Mark Bruckner, falls in love with the "past life" of one of his hypnotized patients. But this version replaces Daisy, the charming young patient first played in the 1960s by Barbara Harris, with Davey — a gay man harboring a female alter ego deep in his subconscious.